1 long life:a family known for longevity. 2  length of life:research in longevity.  length of service; seniority:promotions based on longevity.
Quinapril is an ACE inhibitor. ACE stands for angiotensin converting enzyme. Quinapril is used to treat high blood pressure (hypertension) and heart failure. Quinapril may also be used for purposes not listed in this medication guide.
ACE inhibitors such as quinapril lower blood pressure by inhibiting the formation of angiotensin II, thereby relaxing the arterial muscles and enlarging the arteries. This increases the flow of blood and oxygen to the heart so that it can pump blood more efficiently.